参数资料
型号: TLC2558QDWR
厂商: TEXAS INSTRUMENTS INC
元件分类: ADC
英文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20
封装: PLASTIC, SOIC-20
文件页数: 24/45页
文件大小: 1039K
代理商: TLC2558QDWR
TLC2554, TLC2558
5-V, 12-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS220A –JUNE 1999
30
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
40
45
50
55
60
65
70
75
80
0
100
200
Figure 31
SINAD
Signal-to-Noise
+
Distortion
dB
f – Frequency – kHz
SIGNAL-TO-NOISE + DISTORTION
vs
INPUT FREQUENCY
VCC = 5 V, External Reference = 4 V,
SCLK = 20 MHz, Single Shot, Short
Sample, Mode 00 DSP Mode
9.00
9.20
9.40
9.60
9.80
10.00
10.20
10.40
10.60
10.80
11.00
11.20
11.40
11.60
11.80
12.00
0
100
200
Figure 32
ENOB
Effective
Number
of
Bits
BITS
f – Frequency – kHz
EFFECTIVE NUMBER OF BITS
vs
INPUT FREQUENCY
VCC = 5 V, External Reference = 4 V,
SCLK = 20 MHz, Single Shot,
Short Sample, Mode 00 DSP Mode
–80
–75
–70
–65
–60
–55
–50
0
25
50
75
100
125
150
175
200
Figure 33
THD
T
otal
Harmonic
Distortion
dB
TOTAL HARMONIC DISTORTION
vs
INPUT FREQUENCY
f – Frequency – kHz
VCC = 5 V, External Reference = 4 V,
SCLK = 20 MHz, Single Shot,
Short Sample, Mode 00 DSP Mode
–100
–80
–60
–40
–20
0
25
50
75
100
125
150
175
200
Figure 34
Spurious
Free
Dynamic
Range
dB
f – Frequency – kHz
SPURIOUS FREE DYNAMIC RANGE
vs
INPUT FREQUENCY
VCC = 5 V, External Reference = 4 V,
SCLK = 20 MHz, Single Shot,
Short Sample, Mode 00 DSP Mode
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